Android:Which one to use for package name? Manifest's packagename or Gradle applicationId?

Question

I am using Android Studio version 2.1.2, and I am trying to implement Google Cloud Messaging to my app.

To be able to do that I hav

Answer 1

The application id specified in the build.gradle will be used.

The entry in the AndroidManifest.xml is overridden

Your AndroidManifest.xml will look like this